BattlefieldsBattle of Llangorse Lake
Early Medieval

Battle of Llangorse Lake

916
Breconshire, Wales
Era
Early Medieval
Battle Type
Pitched Battle
Location
Breconshire, Wales
Status
Unregistered
The Combatants

Who Fought

Defeated
Kingdom of Brycheiniog
VS
Victor
Æthelflæd, Lady of the Mercians
Forces involved

Mercian army dispatched by Æthelflæd; defenders of the Brycheiniog royal llys

Outcome
Mercian victory; the royal llys at Llangorse Lake was burned and the queen of Brycheiniog and thirty-three others were taken captive.
The Battle

History & Significance

Æthelflæd (c. 870 – 12 June 918) ruled as Lady of the Mercians in the English Midlands from 911 until her death in 918. She was the eldest child of Alfred the Great, king of the Anglo-Saxon kingdom of Wessex, and his wife Ealhswith.

Æthelflæd was born around 870 at the height of the Viking invasions of England. By 878, most of England was under Danish Viking rule – East Anglia and Northumbria having been conquered, and Mercia partitioned between the English and the Vikings – but in that year Alfred won a crucial victory at the Battle of Edington. Soon afterwards the English-controlled western half of Mercia came under the rule of Æthelred, Lord of the Mercians, who accepted Alfred's overlordship. Alfred adopted the title King of the Anglo-Saxons (previously he was titled King of the West Saxons like his predecessors) claiming to rule all Anglo-Saxon people not living in areas under Viking control. In the mid-880s, Alfred sealed the strategic alliance between the surviving English kingdoms by marrying Æthelflæd to Æthelred.

Æthelred played a major role in fighting off renewed Viking attacks in the 890s, together with Æthelflæd's brother, the future King Edward the Elder. Æthelred and Æthelflæd fortified Worcester, gave generous donations to Mercian churches and built a new minster in Gloucester. Æthelred's health probably declined early in the next decade, after which it is likely that Æthelflæd was mainly responsible for the government of Mercia. Edward had succeeded as King of the Anglo-Saxons in 899, and in 909 he sent a West Saxon and Mercian force to raid the northern Danelaw. They returned with the remains of the royal Northumbrian saint Oswald, which were translated to the new Gloucester minster. Æthelred died in 911 and Æthelflæd then ruled Mercia as Lady of the Mercians. The accession of a female ruler in Mercia is described by the historian Ian Walker as "one of the most unique events in early medieval history".

Alfred had built a network of fortified burhs and in the 910s Edward and Æthelflæd embarked on a programme of extending them. Among the towns where she built defences were Wednesbury, Bridgnorth, Tamworth, Stafford, Warwick, Chirbury and Runcorn. In 917 she sent an army to capture Derby, the first of the Five Boroughs of the Danelaw to fall to the English, a victory described by Tim Clarkson as "her greatest triumph". In 918 Leicester surrendered without a fight. Shortly afterwards the Viking leaders of York offered her their loyalty, but she died on 12 June 918 before she could take advantage of the offer, and a few months later Edward completed the conquest of Mercia. Æthelflæd was succeeded by her daughter Ælfwynn, but in December Edward took personal control of Mercia and carried Ælfwynn off to Wessex.

The ground

The ground they fought on

The site of Battle of Llangorse Lake lies on Lower Devonian Rocks (Undifferentiated), bedrock that formed in the Early Devonian. The rock here is mudstone, siltstone and sandstone.

Buried history

In 916 Æthelflæd dispatched a Mercian army into South Wales that struck the royal crannog settlement on Llangorse Lake, the llys of the kingdom of Brycheiniog. The raiders burned the court and seized the queen of Brycheiniog together with thirty-three members of her household, carrying them back into Mercia. The swift strike against what was then the political heart of Brycheiniog showed the reach and aggression of Mercian power under its Lady.

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Monuments
The legally protected scheduled monuments around the location, each with its period, type and significance.
Battlefields
The battles and sieges fought on this ground, mapped and set on a timeline of the wider conflict.
Roman Britain
The Roman roads, forts and towns near here, and the Iron Age people who held the land before Rome arrived.
Civil War
The Civil War fighting, garrisons and recorded militaria in this area, woven into the arc of 1642 to 1651.
Geology
The bedrock beneath the site, its age and rock type, reaching back hundreds of millions of years.
Local Names
What the street and field names around here actually mean, and the history buried inside them.
Historical Maps
Ordnance Survey maps from the 1800s, layered over the location as it stands today.
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The protected sites nearby and the metal-detecting, access and treasure laws that apply to this ground.
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Protected heritage nearby

Scheduled Monuments near Battle of Llangorse Lake

House Platforms and Hollow Ways in the Shrunken Medieval Village of Llanfihangel Tal-y-Llyn
House Platforms and Hollow Ways in the Shrunken Medieval Village of Llanfihangel Tal-y-Llyn
Scheduled monument · Medieval · ~0.7 mi

House Platforms and Hollow Ways in the Shrunken Medieval Village of Llanfihangel Tal-y-Llyn is a medieval house platform situated on Lower Devonian bedrock in Wales. The underlying geology of mudstone, siltstone and sandstone, formed during the Early Devonian period, would have provided the solid…

Shaun Ferguson / CC BY-SA 2.0 / Wikimedia Commons
The Peterstone
The Peterstone
Scheduled monument · Prehistoric · ~1.2 mi

The Peterstone is a prehistoric standing stone located in Wales and protected as a scheduled monument by Cadw under reference BR268. Like other monolithic stones erected across Britain and Ireland during the Neolithic and Bronze Age periods, it represents a significant marker in the landscape, th…

David Dixon / CC BY-SA 2.0 / Wikimedia Commons
Cross-Slab in Church
Cross-Slab in Church
Scheduled monument · Early Medieval · ~1.3 mi

Cross-Slab in Church is an early medieval carved stone cross preserved within a Welsh parish church. The monument sits on Lower Devonian bedrock comprising mudstone, siltstone and sandstone, geological strata laid down in shallow marine environments over 400 million years ago. This durable local…

Adrian Dust / CC BY-SA 2.0 / Wikimedia Commons
Crannog in Llangorse Lake
Crannog in Llangorse Lake
Scheduled monument · Early Medieval · ~1.4 mi

Crannog in Llangorse Lake is an early medieval artificial island settlement located in south Wales. The structure sits within Llangorse Lake, a natural freshwater body underlain by Lower Devonian bedrock comprising mudstone, siltstone and sandstone deposited during the Early Devonian period. The…

Shaun Ferguson / CC BY-SA 2.0 / Wikimedia Commons
Twmpan Castle Mound
Twmpan Castle Mound
Scheduled monument · Medieval · ~1.7 mi

Twmpan Castle Mound is a medieval motte situated in Wales and protected by Cadw under reference BR054. The monument rises from bedrock of Lower Devonian age, comprising mudstone, siltstone and sandstone laid down in the Early Devonian period. This underlying geology of mixed sedimentary strata ha…

Jonathan Billinger / CC BY-SA 2.0 / Wikimedia Commons
Brynich Aqueduct (Brecknock & Abergavenny Canal)
Brynich Aqueduct (Brecknock & Abergavenny Canal)
Scheduled monument · Post Medieval/Modern · ~1.8 mi

Brynich Aqueduct is a post-medieval cast-iron structure carrying the Brecknock & Abergavenny Canal across the landscape of Wales. Built during the canal age of industrial Britain, the aqueduct represents the engineering ambitions of the period, designed to maintain the canal's water level whilst…

Sionk / CC BY-SA 4.0 / Wikimedia Commons
Ty Illtyd Long Barrow
Scheduled monument · Prehistoric · ~0.9 miles
Twyn Llechfaen Hillfort
Scheduled monument · Prehistoric · ~1.8 miles
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